Improvement in steam-boilers



E. NICHOLSON.

lmprovemenf ('0 Steam .Baf/ers.

N ,123 414 Patented Feb. 6,1872;

2 Sheets- Shet-L UNITED STATES PATENT @rrron EZRA NICHOLSON, OFCLEVELAND, OHIO, ASSIGNOR OFTVVO-THIRDS OF HIS RIGHT TO CHAS. B.STILWELL AND JOHN J. CLAUSE, OF SAME PLACE.

IMPROVEMENT lN STEAM'BOILERS.

Specification forming part of Letters Patent No. 123,414, dated February6, 1572.

SPECIFICATION.

Specification describing certain Improve ments in Steam-Boilers,invented by EZRA NIGHOLsON, of Cleveland, in the county of Cuyahoga andState of Ohio.

The first part of my invention relates to the combination of the linesof the boiler, the heads, and the shell in such a manner that the fluesmay be used as chimneys to ordinary coal-oil lamps; the object of thispart of my invention being to use a cheap fuel for generating steam thatrequires no replenishing during running hours. The second part of myinvention relates to the combination of the lamp, the boiler, and thefire-box or stand, upon which the boiler rests, so as to bring the heatfrom the flame of the lamps in contact with the flues and heatingsurface of the boiler in such manner as to utilize the greatest amountof heat and have perfect combustion in burnin g the oil.

Figure 1 is an exterior view of the boiler.

Fig. 2 is a vertical section of the same. Fig. 3 is a top view of thesame. Fig. 4 is a horizontal section through the line 2 z in Fig. 2.Fig. 5 is a view of the lower part or fire-box through the line at w inFig. 2, showing the position of the lamps when the door is swung open.

A is the shell of the boiler, which may be made of any sheet metalstrong enough to resist the required pressure. B B are the heads or finesheets, made of any suitable metal--I prefer cast malleable iron-whichare fastened in the ends of the shell by rivets, or in any suitablemanner. C C C C are the fines, placed vertically inside the shellpassing through and fastened to the heads. D is the safety -yalve, whichis similar to the safety-valves on ordinary steam-boilers, except thatthe valve-lever is so arranged as to be readily removed from the valveby withdrawing a small pin at c and swinging it to one side withoutdisturbing the spring f. G G are small caps with openings 9 in them,placed at or near the top of the fines to decrease the size of the topopening of the fines. H is the steam cock or throttle, by

which is regulated the supply of steam to the engine. K is thewatergauge, which is a glass-tube so connected with the boiler as toshow the height of the water in the boiler by water in the tube. L isthe fire-box or stand upon which the boiler l( sts, and may be made ofany suitable material, and is so arranged that one side of it forms adoor. M is the lamp, having one or more burners, N, as the case mayrequire, and is so arranged in connection with the fire-box as to beswung from under the boiler by opening wide the door of the stand. Iadapt my boiler to the use of coal-oil for fuel, burned in the ordinarylamp using the lines of the boiler as chimneys to the lamps. I constructthe flues in such manner that when gas or a more expensive oil is used,as well as with the coal-oil, the heat is utilized to that extent thatonly a small quantity of the burning material need be used to generatesufficient steam for the purposes designed. I introduce a sufficientquantity of water into the boiler at one time to furnish steam to runthe machinery, to which the power is applied, one-halfof the usualworking day or more, thus doing awaywith the ordinary pumping apparatusused to keep up the necessary supply of water, and, therefore, relieving the operator from that attention which such apparatusnecessarily requires. By the use of coaloil burned in the ordinary lampI obtain a constant and uniform heat, and I am enabled to furnish fuelenough at one time to last eleven hours or more; and, therefore, myheating apparatus needs no attention during running hours. To utilizethe greatest amount of heat the flues are made of thin sheet metal andare stayed or braced upon the inside by rings 0 O, as shown in Fig. 2,or their equiva' lents to resist the required pressure; but they may bemade of sufficient thickness or rigidity to be used without thesupporting rings. The boiler is raised somewhat above the burners of thelamp, and the burners are incased by a diaphragm, B, Fig. 2, in suchmanner as to form a hot-air chamber under the bottom of the boiler, thusobtaining more heating surface without interfering with the perfectcombus tion of the oil, and serving to protect the lamp from the heat;or, it may be placed lower down so that the dues rest upon the burners,similar to the glass-chimneys ordinarily used with the burners. Tofurther aid the combustion of the oil the caps G G are placed at or nearthe top of the fines, but the flues may J. M. PARKER.

Lamp.

Patented Feb. 6,1872.

. AM Murmur/manure :0. r4 2 asemvzl: P500553,

